Final answer:
The statement is True. A chemical reaction transforms the reactants into products with new properties, indicating a chemical change.
Step-by-step explanation:
After a chemical reaction occurs, the reactants have indeed turned into different substances with different properties, which makes the statement True. A chemical change implies the formation of new substances as the chemical bonds of the reactants break and atoms rearrange themselves into new substances with new chemical bonds. The properties of the products are often vastly different compared to the initial reactants. As highlighted in Chemical Reactions, a chemical change results in the transformation of one molecular substance into another, which is indicative of chemical reactions.
For example, when hydrogen burns in the presence of oxygen to form water, a significant release of energy in the form of heat occurs, indicating that a chemical reaction has taken place. The properties of water are fundamentally different from those of hydrogen and oxygen. So, we can say unequivocally that the initial options provided are indeed attributed to the outcome of a chemical reaction.